https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101711
--- Comment #10 from ctice at gcc dot gnu.org --- I have been trying off-and-on for the last 3 weeks to build a ming64 GCC cross-compiler, on my x86_64 linux ELF system, and I have not been able to do it. This is without enabling libvtv. The instructions referenced on https://sourceforge.net/p/mingw-w64/wiki2/Cross%20Win32%20and%20Win64%20compiler/ are at least 8 years out of date, and I have not been able to make them work. Until I can get a set of instructions that works, I cannot reproduce the problem, and without reproducing it I cannot debug/fix it. I am sorry about this, but I really have tried.